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Subtract 70/63 from 18/49

1st number: 18/49, 2nd number: 1 7/63

18/49 - 70/63 is -328/441.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 63 is 441

    Next, find the equivalent fraction of both fractional numbers with denominator 441
  2. For the 1st fraction, since 49 × 9 = 441,
    18/49 = 18 × 9/49 × 9 = 162/441
  3. Likewise, for the 2nd fraction, since 63 × 7 = 441,
    70/63 = 70 × 7/63 × 7 = 490/441
  4. Subtract the two like fractions:
    162/441 - 490/441 = 162 - 490/441 = -328/441

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